Verfahren zur Herstellung eines elektrischen Doppelschichtkondensators und positive Elektrode für einen elektrischen Doppelschichtkondensator

摘要

A process for producing an electric double layer capacitor, which comprises a step of preparing a positive electrode and a negative electrode, each being a carbonaceous electrode containing as the main component a carbon material having a specific surface area of from 100 to 2,500 m<2>/g, a step of forming an element comprising the positive electrode and the negative electrode and a separator having a thickness of at most 60 mu m interposed therebetween, and a step of impregnating the element with a non-aqueous electrolyte, wherein the copper content in the positive electrode before being impregnated with the non-aqueous electrolyte is at most 1 ppm.